sell shell accounts?

The question is: Will there be routers available that can make IP
routing decisions based on 40-60kroutes and move 2-3 OC3s worth of
bidirectional traffic?

There are now. See for details. Last time I looked their route
table could grow to a couple hundred K's of routes, too. Back when I used
one the slowest media card you could purchase was OC-3...